October 2025 - leyden-dev

KlassTrainingData in AOT cache without holder
by María Arias de Reyna Dominguez 15 Oct '25

15 Oct '25

Hi! I'm working on adding the class name to the KlassTrainingData line in the AOT map file: https://bugs.openjdk.org/browse/JDK-8369418 I found that some of the KlassTrainingData have no InstanceKlass associated to it ( _holder is a null pointer). If I follow the logs, it is because that KlassTrainingData was excluded from the AOT: https://github.com/openjdk/jdk/blob/master/src/hotspot/share/oops/trainingD… $ cat aot.log* | grep "Cleanup KTD" | head [debug][aot,training ] Cleanup KTD org.infinispan.commons.logging.log4j.XmlConfiguration [debug][aot,training ] Cleanup KTD org.infinispan.manager.DefaultCacheManager [debug][aot,training ] Cleanup KTD org.infinispan.distribution.DistributionInfo [debug][aot,training ] Cleanup KTD org.apache.logging.log4j.core.config.Node [debug][aot,training ] Cleanup KTD org.infinispan.factories.impl.BasicComponentRegistry [debug][aot,training ] Cleanup KTD org.apache.logging.log4j.util.Lazy [debug][aot,training ] Cleanup KTD org.infinispan.factories.AnyScopeComponentFactory [debug][aot,training ] Cleanup KTD org.infinispan.rest.framework.impl.PathItem [debug][aot,training ] Cleanup KTD io.micrometer.core.instrument.ImmutableTag [debug][aot,training ] Cleanup KTD org.infinispan.commons.util.ArrayMap$KeySet But the KlassTrainingData with the null pointer is there, on the AOT Cache (or at least on the AOT Map File logger). Am I missing something here? If it is excluded, why is it on the cache? If not, how do we relate this training data to anything useful? Cheers! María Arias de Reyna Domínguez Senior Software Engineer She / Her / Hers

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AOT Map changes during production run
by María Arias de Reyna Dominguez 15 Oct '25

15 Oct '25

Hi! I have a question. I did a training run and generated what looks like a valid cache. Summary of the number of elements (for certain types of elements) the map contains: ``` Classes in AOT Cache: 10.885 Methods in AOT Cache: 121.393 -> ConstMethods: 121.293 -> MethodCounters: 6.530 -> MethodData: 4.127 ConstantPool: 10.197 -> ConstantPoolCache: 10.197 ``` And then I did a production run using the generated cache, which replaced the `aot.map` with a new one that is much smaller: ``` Classes in AOT Cache: 3.431 Methods in AOT Cache: 38.359 -> ConstMethods: 38.359 -> MethodCounters: 0 -> MethodData: 0 ConstantPool: 3.067 -> ConstantPoolCache: 3.067 ``` As you can see, there are a lot of missing elements! If I check the md5sum of the actual cache file before and after the production run, it stays the same. It is the AOT Cache Map which changes. Is that... supposed to happen? Maybe it is a bug related to https://bugs.openjdk.org/browse/JDK-8362566 ? Both map files start with `AOT cache map for app.aot`, it is not the map file for the `app.aot.config` that appears during the training run. Both the training and the run were the same: just spin up an Infinispan server and shut it down after a few seconds. But I guess that's irrelevant because the aot cache file is exactly the same. I could stop generating the aot map file on the production run because there is no need for it, but I forgot to remove it... and then this happened. Kind regards, María Arias de Reyna Domínguez Senior Software Engineer She / Her / Hers ariasdereyna(a)redhat.com

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AOT code JEP text updated
by John Rose 13 Oct '25

13 Oct '25

I have updated the text for the AOT code JEP: https://openjdk.org/jeps/8335368 I would appreciate any editorial comments. My present goal is to come closer to the style of our previous JEPs, and also to reflect recent conversations about AOT code. (That style is relatively non-technical and light on details, FTR. This is just the way things are with JEPs.) The recent conversations involve discussions about different AOT code shapes (AP4 vs. A4) and concerns about ISA compatibility. Please remind me of other recent conversations that may also be applicable to this JEP. Thanks! — John P.S. This is not urgent. I don’t think this JEP will be in the current release. But it is important!

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Leverage profiled compiled size to avoid aggressive inlining and code growth
by Fei Gao 08 Oct '25

08 Oct '25

Hi @leyden-dev<mailto:leyden-dev@openjdk.org> and @hotspot compiler<mailto:hotspot-compiler-dev@openjdk.java.net>, TL;DR https://github.com/openjdk/jdk/pull/27527 I proposed a PoC that explores leveraging profiled compiled sizes to improve C2 inlining decisions and mitigate code bloat. The approach records method sizes during a pre-run and feeds them back via compiler directives, helping to reduce aggressive inlining of large methods. Testing on Renaissance and SPECjbb2015 showed clear code size differences but no significant performance impact on either AArch64 or x86. An alternative AOT-cache-based approach was also evaluated but did not produce meaningful code size changes. Open questions remain about the long-term value of profiling given Project Leyden's direction of caching compiled code in AOT, and whether global profiling information could help C2 make better inlining decisions. 1. Motivation In the current C2 behavior, the inliner only considers the estimated inlined size [1] [2] of a callee if the method has already been compiled by C2. In particular, C2 will explicitly reject inlining in the following cases: Hot methods with bytecode size > FreqInlineSize (325) [3] Cold methods with bytecode size > MaxInlineSize (35) However, a common situation arises where a method's bytecode size is below 325, yet once compiled by C2 it produces a very large machine code body. If this method has not been compiled at the time its caller is being compiled, the inliner may aggressively inline it, potentially bloating the caller, even though an independent compiled copy might eventually exist. To mitigate such cases, we can make previously profiled compiled sizes available early, allowing the inliner to make more informed decisions and reduce excessive code growth. [1] https://github.com/openjdk/jdk/blob/0ba4141cb12414c08be88b37ea2a163aacbfa7d… [2] https://github.com/openjdk/jdk/blob/0ba4141cb12414c08be88b37ea2a163aacbfa7d… [3] https://github.com/openjdk/jdk/blob/0ba4141cb12414c08be88b37ea2a163aacbfa7d… 2. Proof of Concept To validate this idea, I created a proof-of-concept: https://github.com/openjdk/jdk/pull/27527 In this PoC: 1) A dumping interface was added to record C2-compiled method sizes, enabled via the `-XX:+PrintOptoMethodSize` flag. 2) A new attribute was introduced in InlineMatcher: _inline_instructions_size. This attribute stores the estimated inlined size of a method, sourced from a compiler directive JSON file generated during a prior profiling run. 3) The inliner was updated to use these previously profiled method sizes to prevent aggressive inlining of large methods. 3. How to Use To apply this approach to any workload, the workload must be run twice: 1) Pre-run: collect inlined sizes for all C2-compiled methods. 2) Product run: use the profiled method sizes to improve C2 inlining. Step 1 Profile method size (pre-run) Log the compiled method size: `-XX:+UnlockDiagnosticVMOptions -XX:+LogVMOutput -XX:+PrintOptoMethodSize -XX:LogFile=logmethodsize.out` This will generate a log containing method size information from C2. Step 2 Generate the compiler directive file Use the provided Python script to extract method size info and generate a JSON file: `python3 extract_size_to_directives.py logmethodsize.out output_directives.json` This file contains estimated inlined sizes to guide inlining decisions in product run. If the same method is compiled multiple times, the script conservatively retains the smallest observed size. Note: Methods that are not accepted by the CompilerDirective format need to be excluded. Step 3 Use the compiler directive in a product run Pass the generated JSON to the JVM as a directive: `-XX:+UnlockDiagnosticVMOptions -XX:CompilerDirectivesFile=output_directives.json` This enables the inliner to make decisions using previously profiled method sizes, potentially avoiding aggressive inlining of large methods. Note: The patch reuses the existing `inline` directive attribute for inlining control. If multiple inline rules match the same method, only the first match is effective. 4. Testing I tested the following workloads using the method above and measured the code cache size with `-XX:+PrintCodeCache`. The results are shown below, compared against the mainline code. All statistics (min, max, median, mean) are based on three runs. (patch - mainline) / mainline 1) Renaissance.dotty Code size change: AArch64: ``` used min max median mean non-profiled -9.88% -8.13% -8.92% -8.98% profiled -0.73% -0.21% -0.40% -0.45% non-nmethods -15.20% -0.02% -14.92% -10.32% codecache -2.82% -2.88% -2.97% -2.89% max_used min max median mean non-profiled -9.88% -8.13% -8.92% -8.98% profiled 2.37% 1.41% 1.50% 1.76% non-nmethods -0.95% -1.73% -0.93% -1.21% codecache -0.35% -1.00% -0.95% -0.77% ``` X86: ``` used min max median mean non-profiled -9.72% -9.61% -9.36% -9.56% profiled -0.81% -0.90% -1.15% -0.95% non-nmethods -0.04% 0.04% -0.02% -0.01% codecache -2.94% -2.96% -3.11% -3.00% max_used min max median mean non-profiled -9.72% -9.61% -9.36% -9.56% profiled 2.32% 2.60% 2.51% 2.48% non-nmethods -0.63% -2.25% -1.28% -1.39% codecache -0.68% -0.59% -0.70% -0.66% ``` No significant performance changes were observed on either platform. 2) SPECjbb 2015 Code size change: AArch64: ``` used min max median mean non-profiled -1.00% -11.68% -12.73% -8.62% profiled 9.07% -6.93% -2.34% -0.29% non-nmethods 0.02% -0.02% 0.00% 0.00% codecache 2.98% -7.18% -5.35% -3.28% max_used min max median mean non-profiled -10.85% -11.68% -12.73% -11.76% profiled -2.09% -11.65% -1.26% -5.62% non-nmethods 0.13% -1.21% -0.16% -0.41% codecache -6.42% -6.33% -6.10% -6.29% ``` On the AArch64 platform, no significant performance changes were observed for either high-bound IR or max jOPS. For critical jOPS: ``` Min Median Mean Max Var% -2.45% -1.87% -2.45% -3.00% 1.9% ``` X86: ``` used min max median mean non-profiled -9.02% -9.65% -7.93% -8.87% profiled -6.09% -3.18% -4.52% -4.61% non-nmethods -0.02% 0.25% 0.04% 0.09% codecache -5.36% -4.75% -4.58% -4.90% max_used min max median mean non-profiled -4.03% -9.65% -7.93% -7.23% profiled -2.86% 1.16% -1.03% -0.93% non-nmethods 0.02% -0.08% 0.08% 0.01% codecache -0.23% -4.20% -3.70% -2.73% ``` No significant performance change was observed on x86 platform. 5. AOT cache The current procedure above requires three steps: a pre-run to record method sizes, a separate step to process the JSON file, and finally a product run using the profiled method sizes. This workflow may add extra burden to workload deployment. With JEP 515 [4], we can instead store the estimated inlined size in the AOT cache when ciMethod::inline_instructions_size() is called during the premain run, and later load this size from the AOT cache during the product run [5]. The store-load mechanism for inlined size can help reduce the overhead of recomputing actual sizes, but it does not provide the inliner with much additional information about the callee, since the compilation order in the product run generally follows that of the premain run, even if not exactly. To give the inliner more profiled information about callees, I tried another simple draft that records inlined sizes for more C2-compiled methods: https://github.com/openjdk/jdk/pull/27519/commits/ef5e61f3d68ad565ee11e2cc6… However, with this draft using the AOT cache, I did not observe any significant code size changes for any workloads. This may require further investigation. [4] https://openjdk.org/jeps/515 [5] https://github.com/openjdk/jdk/blob/0ba4141cb12414c08be88b37ea2a163aacbfa7d… 6 Questions 1) Relation to Project Leyden Project Leyden aims to enhance the AOT cache to store compiled code from training runs [6]. This suggests that we may eventually prefer to cache compiled code directly from the AOT cache rather than rely solely on JIT compilation. Given this direction, is it still worthwhile to invest further in using profiled method sizes as a means to improve inlining heuristics? Could such profiling provide complementary benefits even if compiled code is cached? 2) Global profiling information for C2 Should we consider leveraging profiled information stored in the AOT cache to give the C2 inliner a broader, more global view of methods, enabling better inlining decisions? For example, could global visibility into method sizes and call sites help address pathological cases of code bloat or missed optimization opportunities? [7] [6] https://openjdk.org/jeps/8335368 [7] https://wiki.openjdk.org/display/hotspot/inlining I'd greatly appreciate any feedback. Thank you for your time and consideration. Thanks, Fei IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

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AppCDS in 25 failing for JRuby command line
by Charles Oliver Nutter 07 Oct '25

07 Oct '25

Hello friends! I was doing some testing of AppCDS on JDK 25, in hopes of having our Docker images pre-generate an AppCDS archive. But I discovered an issue... AppCDS does not appear to like the JRuby command line anymore in JDK 25. Here's part of a session where I delete the old AppCDS archive and then run the same command line twice with AutoCreateSharedArchive. The archive generates ok in the first command, but then is rejected by the second command: [] jdk25 $ rm /Users/headius/work/jruby/lib/jruby-java25.jsa [] jdk25 $ /Library/Java/JavaVirtualMachines/zulu-25.jdk/Contents/Home/bin/java @/Users/headius/work/jruby/bin/.jruby.java_opts @/Users/headius/work/jruby/bin/.jruby.module_opts -Xss2048k -Djffi.boot.library.path=/Users/headius/work/jruby/lib/jni -Djava.security.egd=file:/dev/urandom -XX:+AutoCreateSharedArchive -XX:SharedArchiveFile=/Users/headius/work/jruby/lib/jruby-java25.jsa --enable-native-access=org.jruby.dist --sun-misc-unsafe-memory-access=allow --module-path /Users/headius/work/jruby/lib/jruby.jar -classpath : -Djruby.home=/Users/headius/work/jruby -Djruby.lib=/Users/headius/work/jruby/lib -Djruby.script=jruby -Djruby.shell=/bin/sh org.jruby.Main -e 1 [1.074s][warning][cds] Skipping jdk/proxy2/$Proxy13: Unsupported location [1.074s][warning][cds] Skipping jdk/proxy2/$Proxy25: Unsupported location [1.074s][warning][cds] Skipping org/joda/time/field/MillisDurationField: Old class has been linked ... [1.076s][warning][cds] Skipping org/jruby/org/objectweb/asm/ClassWriter: Old class has been linked [1.076s][warning][cds] Skipping org/joda/time/format/DateTimeFormatterBuilder$PaddedNumber: Old class has been linked [] jdk25 $ /Library/Java/JavaVirtualMachines/zulu-25.jdk/Contents/Home/bin/java @/Users/headius/work/jruby/bin/.jruby.java_opts @/Users/headius/work/jruby/bin/.jruby.module_opts -Xss2048k -Djffi.boot.library.path=/Users/headius/work/jruby/lib/jni -Djava.security.egd=file:/dev/urandom -XX:+AutoCreateSharedArchive -XX:SharedArchiveFile=/Users/headius/work/jruby/lib/jruby-java25.jsa --enable-native-access=org.jruby.dist --sun-misc-unsafe-memory-access=allow --module-path /Users/headius/work/jruby/lib/jruby.jar -classpath : -Djruby.home=/Users/headius/work/jruby -Djruby.lib=/Users/headius/work/jruby/lib -Djruby.script=jruby -Djruby.shell=/bin/sh org.jruby.Main -e 1 [0.008s][error][cds] An error has occurred while processing the shared archive file. Run with -Xlog:aot,cds for details. [0.008s][error][cds] optimized module handling: disabled because extra module path(s) are specified [0.008s][error][cds] Mismatched values for property jdk.module.enable.native.access: org.jruby.dist specified during runtime but not during dump time [0.008s][error][cds] Disabling optimized module handling [0.008s][error][cds] Mismatched values for property jdk.module.addopens: java.base/java.io =org.jruby.dist,java.base/java.nio.channels=org.jruby.dist,java.base/ sun.nio.ch=org.jruby.dist,java.management/sun.management=org.jruby.dist specified during runtime but not during dump time [0.008s][error][cds] Disabling optimized module handling The errors make no sense because I'm doing exactly the same thing in both command lines. Here's the contents of the /Users/headius/work/jruby/bin/.jruby.module_opts file (the .jruby.java_opts file is empty): --add-opens java.base/java.io=org.jruby.dist --add-opens java.base/java.nio.channels=org.jruby.dist --add-opens java.base/sun.nio.ch=org.jruby.dist --add-opens java.management/sun.management=org.jruby.dist Running the same commands against JDK 21 works just fine... the jsa file is generated and used correctly. Is there something I'm doing wrong with this command line that JDK 25 does not like? I can re-test with another JDK if necessary. Let me know if I should open a bug for this. Reproduce by downloading JRuby from https://jruby.org and unpacking. It runs out of the box. *Charles Oliver Nutter* *Architect and Technologist* Headius Enterprises https://www.headius.com headius(a)headius.com

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git: openjdk/leyden: premain: 33 new changesets
by Ioi Lam 03 Oct '25

03 Oct '25

Changeset: 3c6ef5e2 Branch: premain Author: Magnus Ihse Bursie <ihse(a)openjdk.org> Date: 2025-09-22 14:15:51 +0000 URL: https://git.openjdk.org/leyden/commit/3c6ef5e27ae3585b48e9599020e4323bf9ed3… 8368102: Don't store macros in spec.gmk Reviewed-by: erikj ! make/autoconf/flags-cflags.m4 ! make/autoconf/flags-ldflags.m4 ! make/autoconf/spec.gmk.template ! make/common/JdkNativeCompilation.gmk ! make/common/modules/LauncherCommon.gmk ! make/common/native/Link.gmk ! make/hotspot/lib/CompileGtest.gmk ! make/hotspot/lib/JvmFeatures.gmk Changeset: bf726e82 Branch: premain Author: Leo Korinth <lkorinth(a)openjdk.org> Date: 2025-09-22 14:22:57 +0000 URL: https://git.openjdk.org/leyden/commit/bf726e821790fad6ee304c1c36bddedbfe415… 8285984: G1: Use standard idiom for inlined payload in G1MonotonicArena::Segment Reviewed-by: aboldtch, tschatzl ! src/hotspot/share/gc/g1/g1MonotonicArena.cpp ! src/hotspot/share/gc/g1/g1MonotonicArena.hpp ! src/hotspot/share/gc/g1/g1MonotonicArena.inline.hpp Changeset: 2b28c283 Branch: premain Author: Roger Riggs <rriggs(a)openjdk.org> Date: 2025-09-22 15:05:07 +0000 URL: https://git.openjdk.org/leyden/commit/2b28c28384feac1d01b8b789c63f18e69fdf6… 8368298: ProblemList: Test java/lang/ProcessBuilder/Basic.java Reviewed-by: jpai ! test/jdk/ProblemList.txt Changeset: e365b7d6 Branch: premain Author: Alexey Ivanov <aivanov(a)openjdk.org> Date: 2025-09-22 15:08:45 +0000 URL: https://git.openjdk.org/leyden/commit/e365b7d69c58f8a4d85dde15b6ca335f9d85c… 8366369: Add @requires linux for GTK L&F tests Reviewed-by: serb, prr, tr ! test/jdk/com/sun/java/swing/plaf/gtk/4928019/bug4928019.java ! test/jdk/com/sun/java/swing/plaf/gtk/Test6635110.java ! test/jdk/com/sun/java/swing/plaf/gtk/Test6963870.java Changeset: 2f74e143 Branch: premain Author: Kerem Kat <krk(a)openjdk.org> Committer: Aleksey Shipilev <shade(a)openjdk.org> Date: 2025-09-22 15:31:21 +0000 URL: https://git.openjdk.org/leyden/commit/2f74e1433489bccf1fe493417715c0861f88a… 8367862: debug.cpp: Do not print help message for methods ifdef'd out Reviewed-by: mhaessig, kevinw, shade, phh ! src/hotspot/share/utilities/debug.cpp Changeset: ced3f13f Branch: premain Author: Justin Lu <jlu(a)openjdk.org> Date: 2025-09-22 16:58:00 +0000 URL: https://git.openjdk.org/leyden/commit/ced3f13f4e036513444d1fea3958be11741c2… 8367901: Calendar.roll(hour, 24) returns wrong result Reviewed-by: naoto, iris ! src/java.base/share/classes/java/util/GregorianCalendar.java + test/jdk/java/util/Calendar/RollHoursTest.java Changeset: 58270b75 Branch: premain Author: Harshitha Onkar <honkar(a)openjdk.org> Date: 2025-09-22 17:02:17 +0000 URL: https://git.openjdk.org/leyden/commit/58270b757c0bdf82bf753fa304b829e3b6419… 8346839: [TESTBUG] "java/awt/textfield/setechochartest4/setechochartest4.java" failed because the test frame disappears on clicking "Click Several Times" button Reviewed-by: psadhukhan, serb ! test/jdk/java/awt/TextField/SetEchoCharTest4/SetEchoCharTest4.java Changeset: c3aaa875 Branch: premain Author: Chris Plummer <cjplummer(a)openjdk.org> Date: 2025-09-22 17:22:01 +0000 URL: https://git.openjdk.org/leyden/commit/c3aaa8751acfd795207f1a509b6e170e6a753… 8361955: [GCC static analyzer] libjdwp/threadControl.c threadControl_setPendingInterrupt error: dereference of NULL 'node' Reviewed-by: dholmes, sspitsyn, lmesnik ! src/jdk.jdwp.agent/share/native/libjdwp/threadControl.c Changeset: bdfe05b5 Branch: premain Author: Man Cao <manc(a)openjdk.org> Date: 2025-09-22 18:05:48 +0000 URL: https://git.openjdk.org/leyden/commit/bdfe05b595d86c62f7dad78549023a3426423… 8368071: Compilation throughput regressed 2X-8X after JDK-8355003 Reviewed-by: iveresov, shade ! src/hotspot/share/compiler/compilationPolicy.cpp Changeset: 47efe3c7 Branch: premain Author: Sean Coffey <coffeys(a)openjdk.org> Date: 2025-09-22 18:41:07 +0000 URL: https://git.openjdk.org/leyden/commit/47efe3c794c241b7534eac597b3dd03d57167… 8343395: SSLLogger doesn't work for formatted messages Reviewed-by: weijun ! src/java.base/share/classes/sun/security/ssl/SSLLogger.java ! src/java.base/share/classes/sun/security/ssl/Utilities.java ! test/jdk/sun/security/ssl/SSLLogger/DebugPropertyValuesTest.java Changeset: 9f7b9887 Branch: premain Author: Damon Nguyen <dnguyen(a)openjdk.org> Date: 2025-09-22 20:29:48 +0000 URL: https://git.openjdk.org/leyden/commit/9f7b9887cb0950bc24aa7a43b43aa5666cb40… 8366149: JNI exception pending in Java_sun_awt_X11GraphicsDevice_pGetBounds of awt_GraphicsEnv.c:1484 Reviewed-by: aivanov, prr ! src/java.desktop/unix/native/libawt_xawt/awt/awt_GraphicsEnv.c Changeset: d0fe8f7e Branch: premain Author: Magnus Ihse Bursie <ihse(a)openjdk.org> Date: 2025-09-22 21:03:15 +0000 URL: https://git.openjdk.org/leyden/commit/d0fe8f7ede7c2426438c7d6dc5a24cfd2f1d0… 8368312: Move CC_OUT_OPTION out of spec.gmk Reviewed-by: erikj ! make/Hsdis.gmk ! make/autoconf/flags.m4 ! make/autoconf/spec.gmk.template ! make/common/native/CompileFile.gmk Changeset: 4882559a Branch: premain Author: Joe Darcy <darcy(a)openjdk.org> Date: 2025-09-22 21:30:47 +0000 URL: https://git.openjdk.org/leyden/commit/4882559ae34e3fee2fd1fd14cb9617df68664… 8367942: Add API note discussing Double.compareTo total order and IEEE 754 total order Reviewed-by: rgiulietti ! src/java.base/share/classes/java/lang/Double.java ! src/java.base/share/classes/java/lang/Float.java ! src/jdk.incubator.vector/share/classes/jdk/incubator/vector/Float16.java Changeset: b11b1f11 Branch: premain Author: Alexey Semenyuk <asemenyuk(a)openjdk.org> Date: 2025-09-22 23:56:49 +0000 URL: https://git.openjdk.org/leyden/commit/b11b1f1186e00cce6c5490db8976ead2226fa… 8343221: IOUtils.copyRecursive() doesn't create parent directories Reviewed-by: almatvee ! src/jdk.jpackage/share/classes/jdk/jpackage/internal/util/FileUtils.java + test/jdk/tools/jpackage/junit/share/jdk.jpackage/jdk/jpackage/internal/util/FileUtilsTest.java ! test/jdk/tools/jpackage/share/AppContentTest.java Changeset: 61c5245b Branch: premain Author: SendaoYan <syan(a)openjdk.org> Date: 2025-09-23 00:33:05 +0000 URL: https://git.openjdk.org/leyden/commit/61c5245bf7d6626b0c816612adcb0d94d6863… 8367869: Test java/io/FileDescriptor/Sync.java timed out Reviewed-by: jpai, shade, rriggs ! test/jdk/java/io/FileDescriptor/Sync.java Changeset: 942b2177 Branch: premain Author: Dingli Zhang <dzhang(a)openjdk.org> Committer: Fei Yang <fyang(a)openjdk.org> Date: 2025-09-23 07:00:17 +0000 URL: https://git.openjdk.org/leyden/commit/942b21772a05e30af344742a02db1643ad0e0… 8368247: RISC-V: enable vectorapi test for expand operation Reviewed-by: mli, fyang ! test/hotspot/jtreg/compiler/vectorapi/VectorExpandTest.java Changeset: 43531064 Branch: premain Author: Axel Boldt-Christmas <aboldtch(a)openjdk.org> Date: 2025-09-23 07:11:56 +0000 URL: https://git.openjdk.org/leyden/commit/43531064c290928cbbac9ee3662674a0ea3b0… 8368214: ZGC: Remove double newlines Reviewed-by: stefank, jsikstro ! src/hotspot/cpu/aarch64/gc/z/zBarrierSetAssembler_aarch64.hpp ! src/hotspot/cpu/aarch64/gc/z/z_aarch64.ad ! src/hotspot/cpu/ppc/gc/z/zBarrierSetAssembler_ppc.cpp ! src/hotspot/cpu/x86/gc/z/zBarrierSetAssembler_x86.cpp ! src/hotspot/os_cpu/linux_ppc/gc/z/zSyscall_linux_ppc.hpp ! src/hotspot/share/gc/z/zBarrierSet.inline.hpp ! src/hotspot/share/gc/z/zGeneration.cpp ! src/hotspot/share/gc/z/zMark.cpp ! src/hotspot/share/gc/z/zPage.inline.hpp ! src/hotspot/share/gc/z/zPageAllocator.cpp ! src/hotspot/share/gc/z/zRelocate.cpp ! src/hotspot/share/gc/z/zValue.inline.hpp ! src/hotspot/share/gc/z/zVirtualMemoryManager.inline.hpp ! test/hotspot/jtreg/gc/z/TestZNMT.java Changeset: 7ed72d94 Branch: premain Author: Axel Boldt-Christmas <aboldtch(a)openjdk.org> Date: 2025-09-23 07:12:27 +0000 URL: https://git.openjdk.org/leyden/commit/7ed72d943b8d4c5cd0d3707c0c95148db7440… 8368212: ZGC: Fix spelling and typos in comments Reviewed-by: jsikstro, stefank ! src/hotspot/share/gc/z/zArguments.cpp ! src/hotspot/share/gc/z/zBarrierSet.cpp ! src/hotspot/share/gc/z/zDirector.cpp ! src/hotspot/share/gc/z/zHeapIterator.cpp ! src/hotspot/share/gc/z/zJNICritical.cpp ! src/hotspot/share/gc/z/zNMethod.cpp Changeset: 47ed1a8d Branch: premain Author: Axel Boldt-Christmas <aboldtch(a)openjdk.org> Date: 2025-09-23 07:15:06 +0000 URL: https://git.openjdk.org/leyden/commit/47ed1a8d1768ef0623fd9d1ff68d39df5dffa… 8368213: ZGC: Cleanup dead code, unimplemented declarations, unused private fields Reviewed-by: stefank, jsikstro ! src/hotspot/share/gc/shared/gcThreadLocalData.hpp ! src/hotspot/share/gc/z/zBarrier.hpp ! src/hotspot/share/gc/z/zDirector.cpp ! src/hotspot/share/gc/z/zGeneration.cpp ! src/hotspot/share/gc/z/zGeneration.hpp ! src/hotspot/share/gc/z/zMark.cpp ! src/hotspot/share/gc/z/zNMethodTable.hpp ! src/hotspot/share/gc/z/zPageAllocator.cpp ! src/hotspot/share/gc/z/zThreadLocalData.hpp Changeset: 360b6af1 Branch: premain Author: Shawn M Emery <shawn.emery(a)oracle.com> Committer: Jaikiran Pai <jpai(a)openjdk.org> Date: 2025-09-23 07:54:51 +0000 URL: https://git.openjdk.org/leyden/commit/360b6af1b1c39e6d3a01c4a32473cf007ed63… 8364657: Crash for SecureRandom.generateSeed(0) on Windows x86-64 Co-authored-by: Jaikiran Pai <jpai(a)openjdk.org> Reviewed-by: weijun, jpai ! src/jdk.crypto.mscapi/windows/native/libsunmscapi/security.cpp + test/jdk/java/security/SecureRandom/TestStrong.java Changeset: 3e5094ed Branch: premain Author: Ivan Walulya <iwalulya(a)openjdk.org> Date: 2025-09-23 08:19:12 +0000 URL: https://git.openjdk.org/leyden/commit/3e5094ed12dbfad7587b85ae2168565682c1f… 8366865: Allocation GC Pauses Triggered after JVM has started shutdown Reviewed-by: ayang, tschatzl ! src/hotspot/share/gc/g1/g1CollectedHeap.cpp ! src/hotspot/share/gc/g1/g1CollectedHeap.hpp ! src/hotspot/share/gc/g1/g1ConcurrentMark.cpp ! src/hotspot/share/gc/g1/g1Policy.cpp ! src/hotspot/share/gc/g1/g1RemSet.cpp ! src/hotspot/share/gc/g1/g1VMOperations.cpp ! src/hotspot/share/gc/g1/g1VMOperations.hpp ! src/hotspot/share/gc/parallel/parallelScavengeHeap.cpp ! src/hotspot/share/gc/serial/serialHeap.cpp ! src/hotspot/share/gc/shared/collectedHeap.cpp ! src/hotspot/share/gc/shared/collectedHeap.hpp ! src/hotspot/share/gc/shared/gcVMOperations.cpp ! src/hotspot/share/memory/universe.cpp ! src/hotspot/share/memory/universe.hpp ! src/hotspot/share/services/cpuTimeUsage.cpp Changeset: 2e99ed64 Branch: premain Author: Thomas Schatzl <tschatzl(a)openjdk.org> Date: 2025-09-23 09:07:09 +0000 URL: https://git.openjdk.org/leyden/commit/2e99ed64223e48f4173f00ce56d28473dba31… 8368080: G1: Unnecessary initialization of G1CMTask's mark stats table Reviewed-by: iwalulya, shade ! src/hotspot/share/gc/g1/g1FullGCMarker.cpp ! src/hotspot/share/gc/g1/g1RegionMarkStatsCache.cpp ! src/hotspot/share/gc/g1/g1RegionMarkStatsCache.hpp Changeset: d316d3f7 Branch: premain Author: Adam Sotona <asotona(a)openjdk.org> Date: 2025-09-23 09:09:46 +0000 URL: https://git.openjdk.org/leyden/commit/d316d3f74fd951613eef3870ee3da2c2dc5b7… 8366926: Unexpected exception occurs when executing code in a "local" JShell environment Reviewed-by: liach, jlahoda ! src/jdk.jshell/share/classes/jdk/jshell/execution/LocalExecutionControl.java + test/langtools/jdk/jshell/LocalExecutionInstrumentationCHRTest.java Changeset: b48f5193 Branch: premain Author: Francesco Andreuzzi <fandreuzzi(a)openjdk.org> Committer: Aleksey Shipilev <shade(a)openjdk.org> Date: 2025-09-23 09:40:28 +0000 URL: https://git.openjdk.org/leyden/commit/b48f51932fb4c83f9ff102b286fb65e9a0e12… 8368345: Remove leftover includes of strongRootsScope.hpp Reviewed-by: stefank, tschatzl, ayang ! src/hotspot/share/gc/g1/g1ConcurrentMark.cpp ! src/hotspot/share/gc/parallel/psScavenge.cpp Changeset: 29908148 Branch: premain Author: Jaikiran Pai <jpai(a)openjdk.org> Date: 2025-09-23 09:42:56 +0000 URL: https://git.openjdk.org/leyden/commit/29908148f819281dc6d1ef1274ca4d67a4775… 8367598: Switch to CRC32C for SEED calculation in jdk.test.lib.Utils Reviewed-by: weijun ! test/lib/jdk/test/lib/Utils.java Changeset: e122f4dd Branch: premain Author: Shaojin Wen <swen(a)openjdk.org> Date: 2025-09-23 09:46:56 +0000 URL: https://git.openjdk.org/leyden/commit/e122f4dd0d00b6b7d95e5af118af72db2dfdc… 8368024: Remove StringConcatFactory#generateMHInlineCopy Reviewed-by: redestad ! src/java.base/share/classes/java/lang/String.java ! src/java.base/share/classes/java/lang/StringConcatHelper.java ! src/java.base/share/classes/java/lang/System.java ! src/java.base/share/classes/java/lang/invoke/StringConcatFactory.java ! src/java.base/share/classes/jdk/internal/access/JavaLangAccess.java Changeset: dbf787c6 Branch: premain Author: Magnus Ihse Bursie <ihse(a)openjdk.org> Date: 2025-09-23 11:42:20 +0000 URL: https://git.openjdk.org/leyden/commit/dbf787c6b78669c69402d2a57d1ec462035d5… 8368326: Don't export unresolved make variables from configure Reviewed-by: erikj ! make/autoconf/boot-jdk.m4 ! make/autoconf/spec.gmk.template Changeset: 02c78bb4 Branch: premain Author: Thomas Schatzl <tschatzl(a)openjdk.org> Date: 2025-09-23 11:46:37 +0000 URL: https://git.openjdk.org/leyden/commit/02c78bb47e3a9cc8760dd0d0970bb9855f990… 8367731: G1: Make G1CollectionSet manage the young gen cset group Reviewed-by: iwalulya, ayang ! src/hotspot/share/gc/g1/g1CollectedHeap.cpp ! src/hotspot/share/gc/g1/g1CollectedHeap.hpp ! src/hotspot/share/gc/g1/g1CollectionSet.cpp ! src/hotspot/share/gc/g1/g1CollectionSet.hpp ! src/hotspot/share/gc/g1/g1CollectionSet.inline.hpp ! src/hotspot/share/gc/g1/g1CollectionSetCandidates.hpp ! src/hotspot/share/gc/g1/g1RemSet.cpp ! src/hotspot/share/gc/g1/g1YoungCollector.cpp Changeset: 4bc86a26 Branch: premain Author: Erik Gahlin <egahlin(a)openjdk.org> Date: 2025-09-23 12:36:13 +0000 URL: https://git.openjdk.org/leyden/commit/4bc86a26db1eb3d054d80c9759fe04686e1e3… 8367948: JFR: MethodTrace threshold setting has no effect Reviewed-by: shade ! src/jdk.jfr/share/classes/jdk/jfr/events/MethodTraceEvent.java ! src/jdk.jfr/share/classes/jdk/jfr/tracing/MethodTracer.java ! test/jdk/jdk/jfr/event/tracing/TestMethodTrace.java Changeset: f9b91a78 Branch: premain Author: Chen Liang <liach(a)openjdk.org> Date: 2025-09-23 12:47:56 +0000 URL: https://git.openjdk.org/leyden/commit/f9b91a7836766189e1ccefabdd39d30ad4401… 8368050: Validation missing in ClassFile signature factories Reviewed-by: asotona ! src/java.base/share/classes/java/lang/classfile/MethodSignature.java ! src/java.base/share/classes/java/lang/classfile/Signature.java ! src/java.base/share/classes/jdk/internal/classfile/impl/ClassRemapperImpl.java ! src/java.base/share/classes/jdk/internal/classfile/impl/SignaturesImpl.java ! test/jdk/jdk/classfile/SignaturesTest.java Changeset: 61acdf65 Branch: premain Author: Viktor Klang <vklang(a)openjdk.org> Date: 2025-09-23 13:09:15 +0000 URL: https://git.openjdk.org/leyden/commit/61acdf6512c6ea3123edb9017ef99d851c917… 8365065: cancelled ForkJoinPool tasks no longer throw CancellationException Co-authored-by: Doug Lea <dl(a)openjdk.org> Reviewed-by: alanb ! src/java.base/share/classes/java/util/concurrent/ForkJoinTask.java ! test/jdk/java/util/concurrent/tck/ForkJoinPoolTest.java Changeset: fd30ae98 Branch: premain Author: Ioi Lam <iklam(a)openjdk.org> Date: 2025-09-23 14:43:16 +0000 URL: https://git.openjdk.org/leyden/commit/fd30ae988bc512b5d2a5a3fd1bc1ed351af97… 8350550: Preload classes from AOT cache during VM bootstrap Reviewed-by: kvn, heidinga, asmehra ! src/hotspot/share/cds/aotClassInitializer.cpp ! src/hotspot/share/cds/aotClassLinker.cpp ! src/hotspot/share/cds/aotLinkedClassBulkLoader.cpp ! src/hotspot/share/cds/aotLinkedClassBulkLoader.hpp ! src/hotspot/share/cds/aotLinkedClassTable.cpp ! src/hotspot/share/cds/aotLinkedClassTable.hpp ! src/hotspot/share/cds/aotMetaspace.cpp ! src/hotspot/share/cds/aotMetaspace.hpp + src/hotspot/share/cds/aotOopChecker.cpp + src/hotspot/share/cds/aotOopChecker.hpp ! src/hotspot/share/cds/cdsConfig.cpp ! src/hotspot/share/cds/cdsConfig.hpp ! src/hotspot/share/cds/cdsEnumKlass.cpp ! src/hotspot/share/cds/cdsEnumKlass.hpp ! src/hotspot/share/cds/cdsHeapVerifier.cpp ! src/hotspot/share/cds/dynamicArchive.cpp ! src/hotspot/share/cds/heapShared.cpp ! src/hotspot/share/cds/heapShared.hpp ! src/hotspot/share/classfile/classLoaderDataShared.cpp ! src/hotspot/share/classfile/classLoaderDataShared.hpp ! src/hotspot/share/classfile/javaClasses.cpp ! src/hotspot/share/classfile/javaClasses.hpp ! src/hotspot/share/classfile/moduleEntry.cpp ! src/hotspot/share/classfile/modules.cpp ! src/hotspot/share/classfile/modules.hpp ! src/hotspot/share/classfile/systemDictionary.cpp ! src/hotspot/share/classfile/systemDictionary.hpp ! src/hotspot/share/classfile/vmClasses.cpp ! src/hotspot/share/compiler/compilationPolicy.cpp ! src/hotspot/share/memory/iterator.inline.hpp ! src/hotspot/share/memory/universe.cpp ! src/hotspot/share/runtime/java.cpp ! src/hotspot/share/runtime/threads.cpp ! src/java.base/share/classes/java/lang/ClassLoader.java ! src/java.base/share/classes/java/lang/module/ModuleDescriptor.java ! src/java.base/share/classes/java/net/URI.java ! src/java.base/share/classes/java/net/URL.java ! src/java.base/share/classes/java/security/SecureClassLoader.java ! src/java.base/share/classes/jdk/internal/loader/BootLoader.java ! src/java.base/share/classes/jdk/internal/loader/NativeLibraries.java ! src/java.base/share/classes/jdk/internal/misc/CDS.java ! test/hotspot/jtreg/ProblemList-AotJdk.txt ! test/hotspot/jtreg/runtime/cds/appcds/aotClassLinking/MethodHandleTest.java Changeset: 94c4aeea Branch: premain Author: Ioi Lam <iklam(a)openjdk.org> Date: 2025-10-03 09:24:52 +0000 URL: https://git.openjdk.org/leyden/commit/94c4aeeae5ac8876e53e687fdaa66037a2e68… Merge master 09-23-25 ! make/hotspot/lib/JvmFeatures.gmk ! src/hotspot/share/cds/aotClassInitializer.cpp ! src/hotspot/share/cds/aotClassLinker.cpp ! src/hotspot/share/cds/aotLinkedClassBulkLoader.cpp ! src/hotspot/share/cds/aotLinkedClassBulkLoader.hpp ! src/hotspot/share/cds/aotMetaspace.cpp ! src/hotspot/share/cds/aotMetaspace.hpp ! src/hotspot/share/cds/cdsConfig.cpp ! src/hotspot/share/cds/cdsConfig.hpp ! src/hotspot/share/cds/cdsEndTrainingUpcall.cpp ! src/hotspot/share/cds/cdsHeapVerifier.cpp ! src/hotspot/share/cds/filemap.cpp ! src/hotspot/share/cds/filemap.hpp ! src/hotspot/share/cds/heapShared.cpp ! src/hotspot/share/ci/ciMethod.cpp ! src/hotspot/share/classfile/classLoaderDataShared.cpp ! src/hotspot/share/classfile/javaClasses.cpp ! src/hotspot/share/classfile/javaClasses.hpp ! src/hotspot/share/classfile/moduleEntry.cpp ! src/hotspot/share/classfile/modules.cpp ! src/hotspot/share/classfile/modules.hpp ! src/hotspot/share/classfile/systemDictionary.cpp ! src/hotspot/share/compiler/compilationPolicy.cpp ! src/hotspot/share/compiler/compileBroker.cpp ! src/hotspot/share/memory/universe.cpp ! src/hotspot/share/prims/jvm.cpp ! src/hotspot/share/runtime/java.cpp ! src/hotspot/share/runtime/threads.cpp ! src/java.base/share/classes/java/lang/ClassLoader.java ! src/java.base/share/classes/java/lang/System.java ! src/java.base/share/classes/jdk/internal/misc/CDS.java ! test/hotspot/jtreg/ProblemList-AotJdk.txt ! make/hotspot/lib/JvmFeatures.gmk ! src/hotspot/share/cds/aotClassInitializer.cpp ! src/hotspot/share/cds/aotClassLinker.cpp ! src/hotspot/share/cds/aotLinkedClassBulkLoader.cpp ! src/hotspot/share/cds/aotLinkedClassBulkLoader.hpp ! src/hotspot/share/cds/aotMetaspace.cpp ! src/hotspot/share/cds/aotMetaspace.hpp ! src/hotspot/share/cds/cdsConfig.cpp ! src/hotspot/share/cds/cdsConfig.hpp + src/hotspot/share/cds/cdsEndTrainingUpcall.cpp ! src/hotspot/share/cds/cdsHeapVerifier.cpp ! src/hotspot/share/cds/filemap.cpp ! src/hotspot/share/cds/filemap.hpp ! src/hotspot/share/cds/heapShared.cpp ! src/hotspot/share/ci/ciMethod.cpp ! src/hotspot/share/classfile/classLoaderDataShared.cpp ! src/hotspot/share/classfile/javaClasses.cpp ! src/hotspot/share/classfile/javaClasses.hpp ! src/hotspot/share/classfile/moduleEntry.cpp ! src/hotspot/share/classfile/modules.cpp ! src/hotspot/share/classfile/modules.hpp ! src/hotspot/share/classfile/systemDictionary.cpp ! src/hotspot/share/compiler/compilationPolicy.cpp ! src/hotspot/share/compiler/compileBroker.cpp ! src/hotspot/share/memory/universe.cpp ! src/hotspot/share/prims/jvm.cpp ! src/hotspot/share/runtime/java.cpp ! src/hotspot/share/runtime/threads.cpp ! src/java.base/share/classes/java/lang/ClassLoader.java ! src/java.base/share/classes/java/lang/System.java ! src/java.base/share/classes/jdk/internal/misc/CDS.java ! test/hotspot/jtreg/ProblemList-AotJdk.txt

1 0

git: openjdk/leyden: premain: 2 new changesets
by duke 03 Oct '25

03 Oct '25

Changeset: 8d5c0056 Branch: premain Author: Thomas Schatzl <tschatzl(a)openjdk.org> Date: 2025-09-22 13:47:45 +0000 URL: https://git.openjdk.org/leyden/commit/8d5c0056420731cbbd83f2d23837bbb5cdc9e… 8342382: Implement JEP 522: G1 GC: Improve Throughput by Reducing Synchronization Co-authored-by: Amit Kumar <amitkumar(a)openjdk.org> Co-authored-by: Martin Doerr <mdoerr(a)openjdk.org> Co-authored-by: Carlo Refice <carlo.refice(a)oracle.com> Co-authored-by: Fei Yang <fyang(a)openjdk.org> Reviewed-by: iwalulya, rcastanedalo, aph, ayang ! src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp ! src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.hpp ! src/hotspot/cpu/aarch64/gc/g1/g1_aarch64.ad ! src/hotspot/cpu/arm/gc/g1/g1BarrierSetAssembler_arm.cpp ! src/hotspot/cpu/arm/gc/g1/g1BarrierSetAssembler_arm.hpp ! src/hotspot/cpu/arm/gc/g1/g1_arm.ad ! src/hotspot/cpu/ppc/gc/g1/g1BarrierSetAssembler_ppc.cpp ! src/hotspot/cpu/ppc/gc/g1/g1BarrierSetAssembler_ppc.hpp ! src/hotspot/cpu/ppc/gc/g1/g1_ppc.ad ! src/hotspot/cpu/riscv/gc/g1/g1BarrierSetAssembler_riscv.cpp ! src/hotspot/cpu/riscv/gc/g1/g1BarrierSetAssembler_riscv.hpp ! src/hotspot/cpu/riscv/gc/g1/g1_riscv.ad ! src/hotspot/cpu/s390/gc/g1/g1BarrierSetAssembler_s390.cpp ! src/hotspot/cpu/s390/gc/g1/g1BarrierSetAssembler_s390.hpp ! src/hotspot/cpu/s390/gc/g1/g1_s390.ad ! src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp ! src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.hpp ! src/hotspot/cpu/x86/gc/g1/g1_x86_64.ad ! src/hotspot/share/code/aotCodeCache.cpp ! src/hotspot/share/gc/g1/c1/g1BarrierSetC1.cpp ! src/hotspot/share/gc/g1/c1/g1BarrierSetC1.hpp ! src/hotspot/share/gc/g1/c2/g1BarrierSetC2.cpp ! src/hotspot/share/gc/g1/c2/g1BarrierSetC2.hpp ! src/hotspot/share/gc/g1/g1Allocator.cpp ! src/hotspot/share/gc/g1/g1Analytics.cpp ! src/hotspot/share/gc/g1/g1Analytics.hpp ! src/hotspot/share/gc/g1/g1Arguments.cpp ! src/hotspot/share/gc/g1/g1BarrierSet.cpp ! src/hotspot/share/gc/g1/g1BarrierSet.hpp ! src/hotspot/share/gc/g1/g1BarrierSet.inline.hpp ! src/hotspot/share/gc/g1/g1BarrierSetRuntime.cpp ! src/hotspot/share/gc/g1/g1BarrierSetRuntime.hpp ! src/hotspot/share/gc/g1/g1CardTable.cpp ! src/hotspot/share/gc/g1/g1CardTable.hpp ! src/hotspot/share/gc/g1/g1CardTable.inline.hpp + src/hotspot/share/gc/g1/g1CardTableClaimTable.cpp + src/hotspot/share/gc/g1/g1CardTableClaimTable.hpp + src/hotspot/share/gc/g1/g1CardTableClaimTable.inline.hpp ! src/hotspot/share/gc/g1/g1CollectedHeap.cpp ! src/hotspot/share/gc/g1/g1CollectedHeap.hpp ! src/hotspot/share/gc/g1/g1CollectedHeap.inline.hpp ! src/hotspot/share/gc/g1/g1CollectionSet.cpp ! src/hotspot/share/gc/g1/g1ConcurrentMark.cpp ! src/hotspot/share/gc/g1/g1ConcurrentMark.hpp ! src/hotspot/share/gc/g1/g1ConcurrentMarkRemarkTasks.cpp ! src/hotspot/share/gc/g1/g1ConcurrentRebuildAndScrub.cpp ! src/hotspot/share/gc/g1/g1ConcurrentRefine.cpp ! src/hotspot/share/gc/g1/g1ConcurrentRefine.hpp ! src/hotspot/share/gc/g1/g1ConcurrentRefineStats.cpp ! src/hotspot/share/gc/g1/g1ConcurrentRefineStats.hpp + src/hotspot/share/gc/g1/g1ConcurrentRefineSweepTask.cpp + src/hotspot/share/gc/g1/g1ConcurrentRefineSweepTask.hpp ! src/hotspot/share/gc/g1/g1ConcurrentRefineThread.cpp ! src/hotspot/share/gc/g1/g1ConcurrentRefineThread.hpp ! src/hotspot/share/gc/g1/g1ConcurrentRefineThreadsNeeded.cpp - src/hotspot/share/gc/g1/g1DirtyCardQueue.cpp - src/hotspot/share/gc/g1/g1DirtyCardQueue.hpp ! src/hotspot/share/gc/g1/g1FromCardCache.cpp ! src/hotspot/share/gc/g1/g1FullGCCompactTask.cpp ! src/hotspot/share/gc/g1/g1FullGCPrepareTask.inline.hpp ! src/hotspot/share/gc/g1/g1FullGCResetMetadataTask.cpp ! src/hotspot/share/gc/g1/g1GCPhaseTimes.cpp ! src/hotspot/share/gc/g1/g1GCPhaseTimes.hpp ! src/hotspot/share/gc/g1/g1HeapRegion.cpp ! src/hotspot/share/gc/g1/g1HeapRegion.hpp ! src/hotspot/share/gc/g1/g1HeapRegionManager.cpp ! src/hotspot/share/gc/g1/g1HeapRegionManager.hpp ! src/hotspot/share/gc/g1/g1HeapVerifier.cpp ! src/hotspot/share/gc/g1/g1HeapVerifier.hpp ! src/hotspot/share/gc/g1/g1OopClosures.hpp ! src/hotspot/share/gc/g1/g1OopClosures.inline.hpp ! src/hotspot/share/gc/g1/g1ParScanThreadState.cpp ! src/hotspot/share/gc/g1/g1ParScanThreadState.hpp ! src/hotspot/share/gc/g1/g1ParScanThreadState.inline.hpp ! src/hotspot/share/gc/g1/g1Policy.cpp ! src/hotspot/share/gc/g1/g1Policy.hpp - src/hotspot/share/gc/g1/g1RedirtyCardsQueue.cpp - src/hotspot/share/gc/g1/g1RedirtyCardsQueue.hpp ! src/hotspot/share/gc/g1/g1RemSet.cpp ! src/hotspot/share/gc/g1/g1RemSet.hpp ! src/hotspot/share/gc/g1/g1RemSetSummary.cpp ! src/hotspot/share/gc/g1/g1RemSetSummary.hpp + src/hotspot/share/gc/g1/g1ReviseYoungLengthTask.cpp + src/hotspot/share/gc/g1/g1ReviseYoungLengthTask.hpp ! src/hotspot/share/gc/g1/g1ThreadLocalData.hpp ! src/hotspot/share/gc/g1/g1YoungCollector.cpp ! src/hotspot/share/gc/g1/g1YoungCollector.hpp ! src/hotspot/share/gc/g1/g1YoungGCPostEvacuateTasks.cpp ! src/hotspot/share/gc/g1/g1YoungGCPostEvacuateTasks.hpp ! src/hotspot/share/gc/g1/g1YoungGCPreEvacuateTasks.cpp ! src/hotspot/share/gc/g1/g1YoungGCPreEvacuateTasks.hpp ! src/hotspot/share/gc/g1/g1_globals.hpp ! src/hotspot/share/gc/g1/jvmFlagConstraintsG1.cpp ! src/hotspot/share/gc/g1/jvmFlagConstraintsG1.hpp ! src/hotspot/share/gc/g1/vmStructs_g1.hpp - src/hotspot/share/gc/shared/bufferNodeList.cpp - src/hotspot/share/gc/shared/bufferNodeList.hpp ! src/hotspot/share/gc/shared/cardTable.cpp ! src/hotspot/share/gc/shared/cardTable.hpp ! src/hotspot/share/gc/shared/workerDataArray.hpp ! src/hotspot/share/jvmci/jvmciRuntime.cpp ! src/hotspot/share/jvmci/vmStructs_jvmci.cpp ! src/hotspot/share/oops/oop.cpp ! src/hotspot/share/runtime/arguments.cpp ! src/hotspot/share/runtime/cpuTimeCounters.cpp ! src/hotspot/share/runtime/cpuTimeCounters.hpp ! src/hotspot/share/runtime/mutexLocker.cpp ! src/hotspot/share/runtime/mutexLocker.hpp ! src/hotspot/share/runtime/vmOperation.hpp ! test/hotspot/jtreg/compiler/gcbarriers/TestG1BarrierGeneration.java ! test/hotspot/jtreg/gc/g1/TestGCLogMessages.java ! test/hotspot/jtreg/runtime/CommandLine/OptionsValidation/TestOptionsWithRanges.java ! test/hotspot/jtreg/testlibrary_tests/ir_framework/tests/TestIRMatching.java ! test/hotspot/jtreg/vmTestbase/gc/ArrayJuggle/Juggle2.java ! test/jdk/jdk/jfr/event/gc/collection/TestG1ParallelPhases.java Changeset: 3f41ace7 Branch: premain Author: Vladimir Kozlov <vladimir.kozlov(a)oracle.com> Date: 2025-10-03 07:32:22 +0000 URL: https://git.openjdk.org/leyden/commit/3f41ace7f8f033178aa376347298b297a660c… JDK-8342382 port ! src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp ! src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp ! src/hotspot/share/code/aotCodeCache.cpp ! src/hotspot/share/gc/g1/c1/g1BarrierSetC1.cpp ! src/hotspot/share/gc/g1/c2/g1BarrierSetC2.cpp ! src/hotspot/share/gc/g1/g1BarrierSet.hpp ! src/hotspot/share/runtime/arguments.cpp ! src/hotspot/share/runtime/mutexLocker.cpp ! src/hotspot/share/runtime/mutexLocker.hpp ! src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp ! src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp ! src/hotspot/share/code/aotCodeCache.cpp ! src/hotspot/share/gc/g1/c1/g1BarrierSetC1.cpp ! src/hotspot/share/gc/g1/c2/g1BarrierSetC2.cpp ! src/hotspot/share/gc/g1/g1BarrierSet.hpp ! src/hotspot/share/runtime/arguments.cpp ! src/hotspot/share/runtime/mutexLocker.cpp ! src/hotspot/share/runtime/mutexLocker.hpp

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bye stable values, enter lazy constants
by Maurizio Cimadamore 03 Oct '25

03 Oct '25

Hi all, Per and I have been completed another round of preview of the Stable Value API. As you might have noticed, the name changed (again!) to LazyConstant 🙂 https://openjdk.org/jeps/526 In many ways, the new API is more similar to the old ComputedConstant API, as the imperative methods are gone: the only way to create a lazy constant is by providing a lambda expression at construction. The reason behind the change is that, after performing extensive experiments with the StableValue API, we have learned that: * Most use cases could be expressed with a caching supplier. This meant that in most cases developers never needed to interact with StableValue -- which seemed odd. * For low-level cases, the imperative API we provided was not low-level enough, as it still added significant synchronization and boxing costs. This made the API unsuitable to use in performance critical code (such as the ClassFile API). For these reasons we have decided to shift the design center of the API back to the most common, functional use cases, which led us to this simpler API. That said, the quest for a more fundamental building block is not over: we now have a clearer idea on how to expose "stable" access to regular fields/array elements, using a _new_ var handle access mode. Initial experiments look indeed promising: such an approach doesn't require the allocation of intermediate abstractions, and allows clients to decide if they want to pay for synchronization or not. As always, we are very thankful for all the feedback we have received so far, and we look forward for some more! Cheers Maurizio

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RFR: 8368811: [Leyden] Use AOTRuntimeConstants table for card_table::_byte_map_base
by Vladimir Kozlov 03 Oct '25

03 Oct '25

Currently we use `Relocation` info to patch `card_table::_byte_map_base` referenced in compiled code. This is not completely correct since this is not address. We currently have special check in `AOTCodeCache::init2()` to skip AOT code generation and usage if `byte_map_base` is not relocatable [aotCodeCache.cpp#L341](https://github.com/openjdk/leyden/blob/premain/src/h… To avoid this we should use existing `AOTRuntimeConstants` table to load `byte_map_base` from it. I also added few missing loads `card_shift` from `AOTRuntimeConstants` table. Actually I am not sure why we have it in `AOTRuntimeConstants` table. From what I see, it is based on `GCCardSizeInBytes` flag [cardTable.cpp#L46](https://github.com/openjdk/leyden/blob/premain/src/hotsp… and never modified. The flags is not adjusted ergonomically. So we can simple record the flag in AOT code configuration and verify it when loading AOT code. @adinn what do you think about `card_shift` in `AOTRuntimeConstants` table? You added it there. Changes were testing tier1-5. ------------- Commit messages: - 8368811: [Leyden] Use AOTRuntimeConstants table for card_table::_byte_map_base Changes: https://git.openjdk.org/leyden/pull/102/files Webrev: https://webrevs.openjdk.org/?repo=leyden&pr=102&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8368811 Stats: 355 lines in 18 files changed: 203 ins; 113 del; 39 mod Patch: https://git.openjdk.org/leyden/pull/102.diff Fetch: git fetch https://git.openjdk.org/leyden.git pull/102/head:pull/102 PR: https://git.openjdk.org/leyden/pull/102

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git: openjdk/leyden: premain: 8368811: [Leyden] Use AOTRuntimeConstants table for card_table::_byte_map_base
by Vladimir Kozlov 03 Oct '25

03 Oct '25

Changeset: f155270f Branch: premain Author: Vladimir Kozlov <kvn(a)openjdk.org> Date: 2025-10-03 01:30:56 +0000 URL: https://git.openjdk.org/leyden/commit/f155270fc4a1852c50c732f45d8c80f417a11… 8368811: [Leyden] Use AOTRuntimeConstants table for card_table::_byte_map_base Reviewed-by: adinn ! src/hotspot/cpu/aarch64/aarch64.ad ! src/hotspot/cpu/aarch64/c1_LIRAssembler_aarch64.cpp ! src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp ! src/hotspot/cpu/aarch64/gc/shared/cardTableBarrierSetAssembler_aarch64.cpp ! src/hotspot/cpu/aarch64/gc/shared/cardTableBarrierSetAssembler_aarch64.hpp ! src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp ! src/hotspot/cpu/x86/c1_LIRAssembler_x86.cpp ! src/hotspot/cpu/x86/gc/g1/g1BarrierSetAssembler_x86.cpp ! src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.cpp ! src/hotspot/cpu/x86/gc/shared/cardTableBarrierSetAssembler_x86.hpp ! src/hotspot/share/code/aotCodeCache.cpp ! src/hotspot/share/code/aotCodeCache.hpp ! src/hotspot/share/gc/shared/c1/cardTableBarrierSetC1.cpp ! src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.cpp ! src/hotspot/share/gc/shared/c2/cardTableBarrierSetC2.hpp ! src/hotspot/share/opto/idealKit.cpp ! src/hotspot/share/opto/idealKit.hpp

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